SAT Registration Problem

Hi!
I was going to register for this Oct SAT. However, as I updated my profile and pressed “Continue”, the there was a note saying in the next page that:
“You have personal information saved to another collegeboard.org account.
To protect the security of your information, you must use your original account to access online SAT services. Please sign in to your original account now.”
When I signed in again with my account, the page redirected to the main page.
I have been trying again and again but it would just turn out the same.
I am pretty sure I was using my “original account” since I went as far as to create a new one.
I searched for people with the same problem but none of those were solved.
As I’m an international student so I can’t really contact CollegeBoard.
Please help me!
Thanks.